diff options
Diffstat (limited to 'target/linux/ramips/patches-3.18/0037-USB-phy-add-ralink-SoC-driver.patch')
| -rw-r--r-- | target/linux/ramips/patches-3.18/0037-USB-phy-add-ralink-SoC-driver.patch | 199 |
1 files changed, 199 insertions, 0 deletions
diff --git a/target/linux/ramips/patches-3.18/0037-USB-phy-add-ralink-SoC-driver.patch b/target/linux/ramips/patches-3.18/0037-USB-phy-add-ralink-SoC-driver.patch new file mode 100644 index 0000000..2448d0a --- /dev/null +++ b/target/linux/ramips/patches-3.18/0037-USB-phy-add-ralink-SoC-driver.patch @@ -0,0 +1,199 @@ +--- a/drivers/phy/Kconfig ++++ b/drivers/phy/Kconfig +@@ -239,6 +239,11 @@ config PHY_XGENE + help + This option enables support for APM X-Gene SoC multi-purpose PHY. + ++config PHY_RALINK_USB ++ tristate "Ralink USB PHY driver" ++ select GENERIC_PHY ++ depends on RALINK ++ + config PHY_STIH407_USB + tristate "STMicroelectronics USB2 picoPHY driver for STiH407 family" + depends on RESET_CONTROLLER +--- a/drivers/phy/Makefile ++++ b/drivers/phy/Makefile +@@ -31,3 +31,4 @@ obj-$(CONFIG_PHY_ST_SPEAR1340_MIPHY) += + obj-$(CONFIG_PHY_XGENE) += phy-xgene.o + obj-$(CONFIG_PHY_STIH407_USB) += phy-stih407-usb.o + obj-$(CONFIG_PHY_STIH41X_USB) += phy-stih41x-usb.o ++obj-$(CONFIG_PHY_RALINK_USB) += phy-ralink-usb.o +--- /dev/null ++++ b/drivers/phy/phy-ralink-usb.c +@@ -0,0 +1,175 @@ ++/* ++ * Allwinner ralink USB phy driver ++ * ++ * Copyright (C) 2014 John Crispin <blogic@openwrt.org> ++ * ++ * Based on code from ++ * Allwinner Technology Co., Ltd. <www.allwinnertech.com> ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License as published by ++ * the Free Software Foundation; either version 2 of the License, or ++ * (at your option) any later version. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ */ ++ ++#include <linux/delay.h> ++#include <linux/err.h> ++#include <linux/io.h> ++#include <linux/kernel.h> ++#include <linux/module.h> ++#include <linux/mutex.h> ++#include <linux/phy/phy.h> ++#include <linux/platform_device.h> ++#include <linux/reset.h> ++#include <linux/of_platform.h> ++ ++#include <asm/mach-ralink/ralink_regs.h> ++ ++#define RT_SYSC_REG_SYSCFG1 0x014 ++#define RT_SYSC_REG_CLKCFG1 0x030 ++#define RT_SYSC_REG_USB_PHY_CFG 0x05c ++ ++#define RT_RSTCTRL_UDEV BIT(25) ++#define RT_RSTCTRL_UHST BIT(22) ++#define RT_SYSCFG1_USB0_HOST_MODE BIT(10) ++ ++#define MT7620_CLKCFG1_UPHY0_CLK_EN BIT(25) ++#define MT7620_CLKCFG1_UPHY1_CLK_EN BIT(22) ++#define RT_CLKCFG1_UPHY1_CLK_EN BIT(20) ++#define RT_CLKCFG1_UPHY0_CLK_EN BIT(18) ++ ++#define USB_PHY_UTMI_8B60M BIT(1) ++#define UDEV_WAKEUP BIT(0) ++ ++static atomic_t usb_pwr_ref = ATOMIC_INIT(0); ++static struct reset_control *rstdev; ++static struct reset_control *rsthost; ++static u32 phy_clk; ++static struct phy *rt_phy; ++ ++static void usb_phy_enable(int state) ++{ ++ if (state) ++ rt_sysc_m32(0, phy_clk, RT_SYSC_REG_CLKCFG1); ++ else ++ rt_sysc_m32(phy_clk, 0, RT_SYSC_REG_CLKCFG1); ++ mdelay(100); ++} ++ ++static int ralink_usb_phy_init(struct phy *_phy) ++{ ++ return 0; ++} ++ ++static int ralink_usb_phy_exit(struct phy *_phy) ++{ ++ return 0; ++} ++ ++static int ralink_usb_phy_power_on(struct phy *_phy) ++{ ++ if (atomic_inc_return(&usb_pwr_ref) == 1) { ++ int host = 1; ++ u32 t; ++ ++ usb_phy_enable(1); ++ ++ if (host) { ++ rt_sysc_m32(0, RT_SYSCFG1_USB0_HOST_MODE, RT_SYSC_REG_SYSCFG1); ++ if (!IS_ERR(rsthost)) ++ reset_control_deassert(rsthost); ++ if (!IS_ERR(rstdev)) ++ reset_control_deassert(rstdev); ++ } else { ++ rt_sysc_m32(RT_SYSCFG1_USB0_HOST_MODE, 0, RT_SYSC_REG_SYSCFG1); ++ if (!IS_ERR(rstdev)) ++ reset_control_deassert(rstdev); ++ } ++ mdelay(100); ++ ++ t = rt_sysc_r32(RT_SYSC_REG_USB_PHY_CFG); ++ dev_info(&_phy->dev, "remote usb device wakeup %s\n", ++ (t & UDEV_WAKEUP) ? ("enabbled") : ("disabled")); ++ if (t & USB_PHY_UTMI_8B60M) ++ dev_info(&_phy->dev, "UTMI 8bit 60MHz\n"); ++ else ++ dev_info(&_phy->dev, "UTMI 16bit 30MHz\n"); ++ } ++ ++ return 0; ++} ++ ++static int ralink_usb_phy_power_off(struct phy *_phy) ++{ ++ if (atomic_dec_return(&usb_pwr_ref) == 0) { ++ usb_phy_enable(0); ++ if (!IS_ERR(rstdev)) ++ reset_control_assert(rstdev); ++ if (!IS_ERR(rsthost)) ++ reset_control_assert(rsthost); ++ } ++ ++ return 0; ++} ++ ++static struct phy_ops ralink_usb_phy_ops = { ++ .init = ralink_usb_phy_init, ++ .exit = ralink_usb_phy_exit, ++ .power_on = ralink_usb_phy_power_on, ++ .power_off = ralink_usb_phy_power_off, ++ .owner = THIS_MODULE, ++}; ++ ++static struct phy *ralink_usb_phy_xlate(struct device *dev, ++ struct of_phandle_args *args) ++{ ++ return rt_phy; ++} ++ ++static const struct of_device_id ralink_usb_phy_of_match[] = { ++ { .compatible = "ralink,rt3xxx-usbphy", .data = (void *) (RT_CLKCFG1_UPHY1_CLK_EN | RT_CLKCFG1_UPHY0_CLK_EN) }, ++ { .compatible = "ralink,mt7620a-usbphy", .data = (void *) (MT7620_CLKCFG1_UPHY1_CLK_EN | MT7620_CLKCFG1_UPHY0_CLK_EN) }, ++ { }, ++}; ++MODULE_DEVICE_TABLE(of, ralink_usb_phy_of_match); ++ ++static int ralink_usb_phy_probe(struct platform_device *pdev) ++{ ++ struct device *dev = &pdev->dev; ++ struct phy_provider *phy_provider; ++ const struct of_device_id *match; ++ ++ match = of_match_device(ralink_usb_phy_of_match, &pdev->dev); ++ phy_clk = (int) match->data; ++ ++ rsthost = devm_reset_control_get(&pdev->dev, "host"); ++ rstdev = devm_reset_control_get(&pdev->dev, "device"); ++ ++ rt_phy = devm_phy_create(dev, NULL, &ralink_usb_phy_ops, NULL); ++ if (IS_ERR(rt_phy)) { ++ dev_err(dev, "failed to create PHY\n"); ++ return PTR_ERR(rt_phy); ++ } ++ ++ phy_provider = devm_of_phy_provider_register(dev, ralink_usb_phy_xlate); ++ ++ return PTR_ERR_OR_ZERO(phy_provider); ++} ++ ++static struct platform_driver ralink_usb_phy_driver = { ++ .probe = ralink_usb_phy_probe, ++ .driver = { ++ .of_match_table = ralink_usb_phy_of_match, ++ .name = "ralink-usb-phy", ++ } ++}; ++module_platform_driver(ralink_usb_phy_driver); ++ ++MODULE_DESCRIPTION("Ralink USB phy driver"); ++MODULE_AUTHOR("John Crispin <blogic@openwrt.org>"); ++MODULE_LICENSE("GPL v2"); |